5. Slate ($$$$)
A roof made from slate can last as long as 75–150 years. One of the oldest roofing materials, slate is also one of the most expensive.
When it comes to durability, slate stands out from the competition. It’s both fireproof and virtually invincible in most inclement weather. Note that installation should be carefully executed—slate tiles can crack under the weight of the average person.
Slate is one of the most expensive materials because it will last for the better part of a century, and if the roof is properly constructed, more than 150 years. Because of this, slate is an incredibly sustainable roofing material.
Roofing waste (specifically asphalt shingle waste) accounts for 3% of all waste in landfills. This is because homeowners have to replace most roofing materials every 30–50 years. A roof that could last three times as long as its competition is much better for the environment.
And slate is a naturally occurring material, which means that the manufacturing process doesn’t introduce toxins. Finally, because slate is one of the densest roofing materials on the market, it’s incredibly energy efficient, helping to regulate your home’s internal temperature.
6. Solar glass ($$$$)
Solar glass roofing should, incredibly, last for the lifetime of your home. Currently, although there are many manufacturers that offer solar panels for your roof, Tesla is the only manufacturer that offers a solar glass roof.
This roofing option comes with a lifetime tile warranty and boasts an extremely high hail rating. The energy efficiency and the cost of solar glass roofing are inextricably linked. Although it’s fairly expensive to install, you may qualify for a tax credit to offset the cost, depending on where you live.
Also, while we calculate the energy efficiency of most roofing materials in terms of how much energy they save, solar glass actually generates its own energy. Because of this fact, solar glass roofing is the most sustainable roofing material on our list.